I don't know which I love better

1. This isn't even the right color scheme for the character, so it's not like they misinterpreted the sprite
2. Rock over here looks like he shit himself upon seeing a Mettaur and is trying (and failing) to pretend he didn't.
3. Mega Man doesn't even use a gun, he uses a Buster. The only time Mega Man has used a gun are instances that parody this boxart or rare occasions like when his internet incarnation uses the Gun Del Sol during crossover events with Boktai